I agree with cfpinz and others. Looking at both bulls from an unbiased point of view and having phenotype only as a point of referrence, your old bull has more length, greater spring of rib, deeper hindquarters, longer rump, and stands with his legs on the "four corners". He is a more well-balanced bull comparing him length-wise than the younger bull. The younger bull is obviously lacking a more arched spring of rib, which will restrict capacity of both his replacement heifers, if you plan to keep any, and also his feeder calves. He appears almost 'post-legged' and slightly cow-hocked. Look at how his hind feet point away from his center-line, even on the 3/4 angle picture.
I would suggest that you use great care as to the cows/heifers with whom you mate him. You don't want to lose what good phenotype quality you already posses. It takes too long to 'undo' a collection of mistakes from one season of mating the wrong traits into your herd. The "Old Man" is a pretty good looking Gelbvieh, and is NOT Funnel Butted! That negative characteristic is VERY difficult to eradicate from your Genetic base!
I usually don't like to critique an animal this severely from a couple or three pictures, but each picture shows me the same negative traits, which indicates that it usually is not the way they are standing at a particular moment.
Sorry to 'burst your bubble', but better now than later. I am afraid your new bull will cost you some time in the future to repair the damage. One caveat I'll offer; I haven't seen your cow herd, and that may make a significant difference in how your young bull may affect your herd genetics.
DOC HARRIS
PS- Oh yes, one more comment. What is that wavy line down the old bull's back?